Symptoms

With some types of diarrhoea you might feel you have to get to the toilet urgently – and your bowel motion might be explosive.

Diarrhoea is usually mild and doesn’t last long – but it may be a symptom of a disease in your intestine or stomach.

Along with the diarrhoea, you might also have:

abdominal pain and cramping

change in the colour of your motions

mucous, pus, blood or fat in the motions

a feeling of weakness.

Treatment

Self care

Diarrhoea usually gets better in a day or two. If you have stomach cramps, try a hot water bottle or wheat pack on your tummy, or take paracetamol (such as Panadol).

If you or your child has a rash (like a nappy rash) from the diarrhoea, use zinc and castor oil ointment or a barrier cream. Make sure the skin is clean and dry before you apply this.

Some painkillers (called NSAID – such as aspirin, ibuprofen, diclofenac) can cause diarrhoea – so don’t take these when you have it.

There are medicines that stop diarrhoea (like Imodium) – but in doing this they also stop your body from getting rid of the bacteria or virus that has caused the diarrhoea. They can also cause a blockage in your bowel, so it is best to avoid using them unless you really can't cope with the diarrhoea.

Dehydration

Long periods of diarrhoea, or repeated episodes, can lead to dehydration, which can be dangerous.

There is a greater risk of dehydration when diarrhoea and vomiting occur at the same time.

Those most at risk are infants, children and older people.

If you or a family member is dehydrated, the main signs will be:

very little (or no) urine being passed

the urine being very dark and smelly.

A useful test is to pinch some skin on your tummy or inner thigh. If it stays in the pinched shape after you let go, that is a clear sign of dehydration.

Infants (up to one year)

If your baby is dehydrated, this is what to do:

Start with clear fluids or a rehydration drink such as Pedialyte or Gastrolyte.

Alternate feeds of rehydration solution with breast milk or formula.

Go back to your baby’s normal diet as soon as they have no signs of dehydration (they’re passing urine and their skin relaxes when pinched). This will help them recover more quickly and not lose as much weight. If your baby eats solids, start off with starchy foods such as baby rice, bread, mashed potatoes and bananas.

Children and adults

If you or your child is dehydrated, this is what to do:

Start with clear fluids, such as water, clear soup or a rehydration drink like Gastrolyte or Pedialyte. You can also use sports drinks containing electrolytes, such as Powerade, diluted 50/50 with water. (Try freezing the rehydration drink into iceblocks if your child doesn’t like the taste.)

Adults should aim for two to three litres of fluid a day (unless your doctor has told you to restrict fluids for some reason).

Avoid drinks containing a lot of sugar (like soft drinks) because they can make your diarrhoea worse. Diluted apple juice is OK, but no other fruit juices.